Results 71 to 80 of about 25,789 (227)

Contribution of Fat Adjustment to Residual Feed Intake Estimation in Beef Cattle

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Including fat thickness as a covariate in the regression model used to calculate residual feed intake (RFI) could help preserve carcass quality traits, such as marbling, flavour and juiciness, by accounting for variation in fat deposition.
Larissa Bordin Temp, Letícia Pereira, Marcos Jun‐Iti Yokoo, Cintia Righetti Marcondes, Roberto D. Sainz, Fernando Bussiman, Jorge Hidalgo, Daniela Lourenco, Fernando Baldi   +8 more
wiley   +1 more source

A Testicular Leydig Cell Tumor; An Uncommon Cause of Precocious Puberty: A Case Report With Secondary Central Precocious Puberty

Acta Medica Iranica, 2023
Sexual precocity in boys is defined as any sign of secondary sexual characteristics present before the age of 9. Leydig cell tumors of the testes are a rare cause of peripheral precocious puberty in boys.
Seyede Tahereh Mousavi, Farshad Zohrabi, Mohammadreza Farzaneh   +2 more
doaj  

Bird's-eye view of GnRH analog use in a pediatric endocrinology referral center [PDF]

, 2015
OBJECTIVE: Gonadotropin-releasing hormone analogs (GnRHa) are standard of care for the treatment of central precocious puberty (CPP). GnRHa have also been prescribed in other clinical settings with the hope of increasing adult stature, although ...
Eugster, Erica A., Greene, Ariana, Lewis, Katherine, Watson, Sara E.   +3 more
core   +1 more source

Genetic Parameters and Genome‐Wide Association Studies for Fertility and Reproduction Traits in U.S. Katahdin Sheep Based on the Single‐Step GBLUP Methodology

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Sheep production contributes to a secure and diverse food and fibre supply in the United States, with growing ethnic diversity strengthening demand. Katahdin is a composite hair‐type sheep breed developed in the United States that has become the most popular breed in many regions of the country and the first one to have genomic selection ...
Alejandra Toro Ospina, Ronald M. Lewis, Bradley A. Freking, Joan M. Burke, Thomas W. Murphy, Carrie S. Wilson, Luiz F. Brito   +6 more
wiley   +1 more source

Genetic Relationships Between Residual Gain and Economically Important Traits in Nellore Cattle

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Sustainable beef production requires identifying animals with superior feed efficiency to reduce environmental impact and production costs. This study aimed to estimate heritability and genetic correlations between residual gain (RG) and growth, reproductive, carcass and feed efficiency traits in Nellore cattle.
Miller Teodoro, Gabriel Gubiani, Letícia Pereira, Amanda Santos Gubiani, Angélica Simone Cravo Pereira, Roberto Sainz, Cláudio Ulhôa Magnabosco, Fernando Baldi   +7 more
wiley   +1 more source

Association of Prenatal Urinary Concentrations of Phthalates and Bisphenol A and Pubertal Timing in Boys and Girls. [PDF]

, 2018
BackgroundAnimal studies suggest that phthalates and bisphenol A (BPA), endocrine-disrupting chemicals found in many consumer products, may impact the timing of puberty.ObjectivesWe aimed to determine the association of prenatal exposure to high ...
Berger, Kimberly, Calafat, Antonia M, Eskenazi, Brenda, Greenspan, Louise C, Harley, Kim G, Holland, Nina, Kogut, Katherine, Lustig, Robert H, Parra, Kimberly, Ye, Xiaoyun   +9 more
core   +1 more source

Environmental chemical exposures and breast cancer [PDF]

, 2016
As a hormone-sensitive condition with no single identifiable cause, breast cancer is a major health problem. It is characterized by a wide range of contributing factors and exposures occurring in different combinations and strengths across a lifetime ...
Plant, J, Stanley, E, Voulvoulis, N
core   +2 more sources

Body size of male Atlantic salmon (Salmo salar L.) at introduction of a 5‐week LD12:12 winter signal influences their decision to mature early or smoltify

Journal of Fish Biology, EarlyView.
Abstract Sexual maturation of male Atlantic salmon post‐smolts (‘jacking’) is undesired in aquaculture and seems to occur due to the intensification in modern facilities. Maturation depends on internal and external factors (temperature, photoperiod, feed availability, energy levels, body size, genetic background) that act on the brain‐pituitary‐gonad ...
Enrique Pino‐Martinez, Kristine F. Staveland, Mitchell S. Fleming, Pablo Balseiro, Cindy Pedrosa, Sigurd O. Handeland   +5 more
wiley   +1 more source

PRECOCIOUS PUBERTY

Ginekologia polska, 2011
Precocious puberty is an early sexual maturation before the age of 8 in case of girls and 9 in boys. There are two types: isosexual precocious puberty--characteristic are appropriate for the child's genetic and gonadal sex; and heterosexual precocious puberty--sexual characteristic are inappropriate for the genetic sex (feminizing syndrome in boys or ...
Grazyna, Jarzabek-Bielecka, Katarzyna, Warchoł-Biedermann, Elzbieta, Sowińska, Katarzyna, Wachowiak-Ochmańska   +3 more
  +5 more sources

Clinical spectrum of precocious puberty and its normal variants in children: insights from a seven-year review in a tertiary hospital, Calabar, Nigeria

Ibom Medical Journal
Context: Precocious puberty, clinically defined as the development of secondary sexual characteristics before 8 years of age in girls and 9 years in boys, represents a clinical spectrum that encompasses both pathological and non-pathological variants of
Eyong ME, Nsa EI, Uzomba CI, Eyong EM, Brown E, Ikobah JM, Etuk IS   +6 more
doaj   +1 more source